BOLIVIA, Potosí, cob 1/2 real, Philip II, assayer R (Rincón) to left, mintmark P to right. S-P1; KM-1.1; Cal-136. 1.66 grams. Nice AU example with bold full monogram, clear assayer R to left and mintmark P to right, complete cross with much text showing in the legends, very light surface porosity, much nicer than usually encountered.